Die for making rolled forcings



UNITED STATES PATENT OFFICE;

GEORGE F. SIMONDS, OF FITCHBURG, MASSACHUSETTS.

DIE FOR MAKING ROLLED FORGINGS.y

SPECIFICATION forming pari; of Letters Patent No. 384,092', dated June 5, 1888.

Application mod November 2,1887. sonar No. 254,061. (No model.)

To @ZZ whom it may concern:

Be it known that I, GEORGE F. SIMoNDs, of Fitchburg, State of Massachusetts, have invented a new and useful Improvement in Dies for Making Rolled Forgings, of which the fol- 1 lowing is a specification.

constituted the working parts of the dies.

My improvement consists in making the working parts of a die in sections and attaching them to a bed-plate in their proper relation to each other, as hereinafter described.

In thedrawings forming a part of this specification, Figure lis a plan of the complete die. Fig. 2 is a perspective view of the castiron die-supporting bed-plate, and Fig. 3 a cross-section on line xx, Fig. l.

In the drawings 4I have shown a simple form of die for purposes of illustration; but the die may have any desired conformation necessary to produce any required article.

A base or platen, A, of cast-iron or other material of a less cost than steel or other hard material used for the working-faces of dies, has planed in it two dovetailed recesses or grooves, a a, which converge and unite, forming a single recess at b. This leaves a triangular raised face, d, between the two dovetailed grooves a a, from which is cut the point e at about the line e. The steel working-faces of the dies are made in a series of sections, i i i 73 i. The section t', bearing the initial working-faces of the die, is a triangular piece, having its sides cut to accurately tit the recess formed by the meeting ends of the dovetail grooves a a, and is inserted with its base against the face of the bed A, formed by cutting away the raised portion or face d on the line e', thereby aording the opportunity to pass piece i into the dovetail grooves until it is home on the bottoms of the grooves. The triangular piecei is then driven toward the meeting or converging point of the grooves a a until it brings up and is securely held by the sides of the dovetail. The pieces or sections t" i fi im may be made of any desired length commensurate with facility of construction and perfection in hardening, and conform on their sides and lower faces to the dovctail grooves. They are inserted endwise at h h into the grooves and driven toward the converging point of said grooves until they abut against the piece i, or against each other. A convenient key, plate, or latch (illustrated at E) serves to prevent the sections from becoming displaced unintentionally.

The construction hereinbefore described enables me to make sections of the die-faces performing the Work interchangeable and removable, as well as affording opportunity for perfection of hardening, when such accuracy is a substantial necessity. The groove in the sustaining medium ofthe working-faces of the die may be of any desired shape without departing from the spirit of my invention, and any device may be used that maybe found convenient for securing the sections in place.

I claim- A die for producing rolled forgngs, formed of a series of hardened-steel sectional parts inserted in their proper relation to each other in converging dovetailed recesses in an iro base.

GEO. F. SIMONDS.

Witnesses:

Jos. P. LIVERMORE, M. E. HILL. 

